Perhaps you should try some spelling variations:
hanh trinh » canh tranh, hanh chinh
hanh tranh » canh tranh, hanh trang, lanh tranh
nhung tung » nhung tuong, nhung dung, nhung vung
tung tinh » trung tinh, tung hinh, dung tinh
theo chu » theo chieu, cho chu, chao chu
chu sach » cau sach, thu sach, chieu sach
toan cao » toan ban, toan tap

You may be able to get more results by adjusting your search query.

• Performing a fuzzy search may retrieve terms with similar spellings: theo chu sach - ((hanh tranh) or (hanh trinh)) va nhung tung tinh toan cao~.
• If you are trying to use Boolean operators, they must be ALL CAPS: theo chu sach - ((hanh tranh) OR (hanh trinh)) va nhung tung tinh toan cao.
• Adding a wildcard symbol may retrieve word variants: theo chu sach - ((hanh tranh) or (hanh trinh)) va nhung tung tinh toan cao*.